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February 4th, 2026 :: 8:28 am CST   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated February 4th at 6:54 am 
Overcast
Temperature:12°F Dew Point:10°F
Barometer:30.36 inHg Wind:calm
Humidity:91.8% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Feb 4th
Thursday
Feb 5th
Friday
Feb 6th
Saturday
Feb 7th
Sunday
Feb 8th
Mix of Cloud and Sun Cloudy Mostly Sunny Cloudy Cloudy
25°F
30°F
11°F
43°F
23°F
28°F
18°F
45°F
23°F
 
 Decatur Detailed Weather Forecast  
 
Wednesday, February 4th, 2026
Morning Temperature: 21°F
Sunny with cloudy periods.
Afternoon Temperature: 16°F
Sunny.
Evening Temperature: 12°F
Clear.
Thursday, February 5th, 2026
Overnight Temperature: 13°F
Cloudy.
Morning Temperature: 26°F
Cloudy. Windy at times.
Afternoon Temperature: 24°F
Sunny.
Evening Temperature: 23°F
Cloudy.
Friday, February 6th, 2026
Overnight Temperature: 24°F
Mostly clear.
Morning Temperature: 36°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 34°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 28°F
A mix of cloudy and clear skies. Windy at times.
Saturday, February 7th, 2026
Overnight Temperature: 20°F
Clear. Windy at times.
Morning Temperature: 24°F
Mostly sunny. Windy at times.
Afternoon Temperature: 24°F
Cloudy. Windy at times.
Evening Temperature: 24°F
Cloudy. Windy at times.
Sunday, February 8th, 2026
Overnight Temperature: 24°F
Cloudy. Windy at times.
Morning Temperature: 37°F
Cloudy. Windy at times.
Afternoon Temperature: 36°F
Sunny.
Evening Temperature: 32°F
Clear.
Monday, February 9th, 2026
Overnight Temperature: 31°F
A mix of cloudy and clear skies.
Morning Temperature: 44°F
Sunny. Windy at times.
Afternoon Temperature: 42°F
Cloudy.
Evening Temperature: 42°F
Cloudy. Windy at times.
Tuesday, February 10th, 2026
Overnight Temperature: 49°F
Cloudy with a slight chance of showers. Windy at times.
Morning Temperature: 55°F
Cloudy with a chance of showers. Windy.
Afternoon Temperature: 46°F
Cloudy. Windy at times.
Evening Temperature: 38°F
Cloudy. Windy.
Wednesday, February 11th, 2026
Overnight Temperature: 29°F
Clear. Windy at times.
Morning Temperature: 34°F
Sunny. Windy at times.
Afternoon Temperature: 33°F
Sunny.
Evening Temperature: 30°F
A mix of cloudy and clear skies.
Thursday, February 12th, 2026
Overnight Temperature: 28°F
Cloudy.
Morning Temperature: 37°F
Cloudy. Windy at times.
Afternoon Temperature: 36°F
Cloudy. Windy at times.
Evening Temperature: 34°F
Cloudy. Windy at times.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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